<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <link th:replace="template/sys_header :: header" />
    <script type="text/javascript" th:replace="template/sys_header :: footer"></script>
</head>
<body>
    userName : <span th:text="${sysUser.userName}"></span>
</body>
</html>